On 12Aug23:1047+0200, Javier Sanz wrote: > > You say that there is a message, > [6.993495] Disabling lock debugging due to kernel taint > > how do you get it ? This and other pertinent messages are logged (under Debian) in /var/log/kern.log and are crucial for understanding what is going on. Compare yours to the one I attached to the Debian bug report. > have you sent this information any nvidia forums? > no answer? how can we fix it ? > > Yesterday, testing with kernel 3.4.9-rt17 with nvidia > 304.37 drivers ... nvidia gt 240 ... all blocked .. > i am at same point ... > > So, what is the next step? mails? forums? > > What do you suggest? The nvidia driver, not being libre source, "taints" the kernel environment, and policy mandates disabling spin lock debugging logic as a consequence. Some interaction between nvidia and the rt kernel is the most likely cause of the blocking encountered since it doesn't manifest with comparable non-rt kernels. Also, the problem has been introduced since the code levels in the Linux Mint environment I documented in the Debian bug report. This is an area programmed and debugged by well-studied kernel developers. Mere mortals are not equipped to tackle such matters. I have already done what I suggested in my previous messages. If an rt and/or nvidia developer does not take an interest in this behaviour, it must be hoped the misbehavior induces other problems they are motivated to investigate. I have asked for suggestions on this list and in the Debian bug report about next steps but thus far have received no responses. While I do think I could learn enough to expertly dig into this in a couple man-months, I do not think I will be compelled to actually make it a priority unless my circumstances significantly change; e.g., somebody offers me some financial incentive to do so. I'll ask this list again: should this become an rt kernel or nvidia bug report somewhere or should I just let it percolate up from Debian? In the meantime I don't use nvidia with the rt kernel except with my Linux Mint partition, and that only to run FlightGear (not very often anymore). -- May the LORD God bless you exceedingly abundantly! Dave_Craig______________________________________________ "So the universe is not quite as you thought it was. You'd better rearrange your beliefs, then. Because you certainly can't rearrange the universe." __--from_Nightfall_by_Asimov/Silverberg_________________ -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
